Moon Sung-keun

as Byeong-hak

as Lawyer

as Father

as Professor Seong

as Chief Nam Kyeong-dae

as CEO Jeon

as Lee Eui-myeong

as Jang Se-dong

as Sang-won

as Wan-ho

as President Yoon

as Moon Dok-bae / Moon Chae-ku

as Kwon Yong-hwan

as Yun Young-hwan

as Professor Song

as Jung Ji-yong

as Kang Ki-chun

as Mr. Jang

as Young-soo

as Bae Tae-gon

as Mr. Moon

as Doctor

as Gu Yang-Won

as Pan-gon

as Oh Sung-ho

as Kim Kyoo-hwan

as Vice Principal (Relay)

as Young-soo

as CEO Jeong (voice)

as Shin Jae-yeol

as Me

as Self

as Moon-soo

as Hwan

as Self

Cast

as Han Yun-sik

as Kim Ki-young

as Self

as Narrator (voice)

as Jeon Sang-ok

as Young-sub

as Joo-dong

as Self

as R

as Narrator

as Young-cheol

Cast

as Self

Cast

as Himself

as Choo Hyung-Do

Cast

as Self

Cast

as DJ